/* * Copyright (C) 2011 Samsung Electronics Co.Ltd * Authors: * Seung-Woo Kim * Inki Dae * Joonyoung Shim * * Based on drivers/media/video/s5p-tv/mixer_reg.c * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include #include "regs-mixer.h" #include "regs-vp.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "exynos_drm_drv.h" #include "exynos_drm_crtc.h" #include "exynos_drm_plane.h" #include "exynos_drm_iommu.h" #include "exynos_mixer.h" #define MIXER_WIN_NR 3 #define MIXER_DEFAULT_WIN 0 /* The pixelformats that are natively supported by the mixer. */ #define MXR_FORMAT_RGB565 4 #define MXR_FORMAT_ARGB1555 5 #define MXR_FORMAT_ARGB4444 6 #define MXR_FORMAT_ARGB8888 7 struct mixer_resources { int irq; void __iomem *mixer_regs; void __iomem *vp_regs; spinlock_t reg_slock; struct clk *mixer; struct clk *vp; struct clk *hdmi; struct clk *sclk_mixer; struct clk *sclk_hdmi; struct clk *mout_mixer; }; enum mixer_version_id { MXR_VER_0_0_0_16, MXR_VER_16_0_33_0, MXR_VER_128_0_0_184, }; enum mixer_flag_bits { MXR_BIT_POWERED, MXR_BIT_VSYNC, }; struct mixer_context { struct platform_device *pdev; struct device *dev; struct drm_device *drm_dev; struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[MIXER_WIN_NR]; int pipe; unsigned long flags; bool interlace; bool vp_enabled; bool has_sclk; struct mixer_resources mixer_res; enum mixer_version_id mxr_ver; wait_queue_head_t wait_vsync_queue; atomic_t wait_vsync_event; }; struct mixer_drv_data { enum mixer_version_id version; bool is_vp_enabled; bool has_sclk; }; static const u8 filter_y_horiz_tap8[] = { 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 2, 4, 5, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 0, -6, -12, -16, -18, -20, -21, -20, -20, -18, -16, -13, -10, -8, -5, -2, 127, 126, 125, 121, 114, 107, 99, 89, 79, 68, 57, 46, 35, 25, 16, 8, }; static const u8 filter_y_vert_tap4[] = { 0, -3, -6, -8, -8, -8, -8, -7, -6, -5, -4, -3, -2, -1, -1, 0, 127, 126, 124, 118, 111, 102, 92, 81, 70, 59, 48, 37, 27, 19, 11, 5, 0, 5, 11, 19, 27, 37, 48, 59, 70, 81, 92, 102, 111, 118, 124, 126, 0, 0, -1, -1, -2, -3, -4, -5, -6, -7, -8, -8, -8, -8, -6, -3, }; static const u8 filter_cr_horiz_tap4[] = { 0, -3, -6, -8, -8, -8, -8, -7, -6, -5, -4, -3, -2, -1, -1, 0, 127, 126, 124, 118, 111, 102, 92, 81, 70, 59, 48, 37, 27, 19, 11, 5, }; static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id) { return readl(res->vp_regs + reg_id); } static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id, u32 val) { writel(val, res->vp_regs + reg_id); } static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id, u32 val, u32 mask) { u32 old = vp_reg_read(res, reg_id); val = (val & mask) | (old & ~mask); writel(val, res->vp_regs + reg_id); } static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id) { return readl(res->mixer_regs + reg_id); } static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id, u32 val) { writel(val, res->mixer_regs + reg_id); } static inline void mixer_reg_writemask(struct mixer_resources *res, u32 reg_id, u32 val, u32 mask) { u32 old = mixer_reg_read(res, reg_id); val = (val & mask) | (old & ~mask); writel(val, res->mixer_regs + reg_id); } static void mixer_regs_dump(struct mixer_context *ctx) { #define DUMPREG(reg_id) \ do { \ DRM_DEBUG_KMS(#reg_id " = %08x\n", \ (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \ } while (0) DUMPREG(MXR_STATUS); DUMPREG(MXR_CFG); DUMPREG(MXR_INT_EN); DUMPREG(MXR_INT_STATUS); DUMPREG(MXR_LAYER_CFG); DUMPREG(MXR_VIDEO_CFG); DUMPREG(MXR_GRAPHIC0_CFG); DUMPREG(MXR_GRAPHIC0_BASE); DUMPREG(MXR_GRAPHIC0_SPAN); DUMPREG(MXR_GRAPHIC0_WH); DUMPREG(MXR_GRAPHIC0_SXY); DUMPREG(MXR_GRAPHIC0_DXY); DUMPREG(MXR_GRAPHIC1_CFG); DUMPREG(MXR_GRAPHIC1_BASE); DUMPREG(MXR_GRAPHIC1_SPAN); DUMPREG(MXR_GRAPHIC1_WH); DUMPREG(MXR_GRAPHIC1_SXY); DUMPREG(MXR_GRAPHIC1_DXY); #undef DUMPREG } static void vp_regs_dump(struct mixer_context *ctx) { #define DUMPREG(reg_id) \ do { \ DRM_DEBUG_KMS(#reg_id " = %08x\n", \ (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \ } while (0) DUMPREG(VP_ENABLE); DUMPREG(VP_SRESET); DUMPREG(VP_SHADOW_UPDATE); DUMPREG(VP_FIELD_ID); DUMPREG(VP_MODE); DUMPREG(VP_IMG_SIZE_Y); DUMPREG(VP_IMG_SIZE_C); DUMPREG(VP_PER_RATE_CTRL); DUMPREG(VP_TOP_Y_PTR); DUMPREG(VP_BOT_Y_PTR); DUMPREG(VP_TOP_C_PTR); DUMPREG(VP_BOT_C_PTR); DUMPREG(VP_ENDIAN_MODE); DUMPREG(VP_SRC_H_POSITION); DUMPREG(VP_SRC_V_POSITION); DUMPREG(VP_SRC_WIDTH); DUMPREG(VP_SRC_HEIGHT); DUMPREG(VP_DST_H_POSITION); DUMPREG(VP_DST_V_POSITION); DUMPREG(VP_DST_WIDTH); DUMPREG(VP_DST_HEIGHT); DUMPREG(VP_H_RATIO); DUMPREG(VP_V_RATIO); #undef DUMPREG } static inline void vp_filter_set(struct mixer_resources *res, int reg_id, const u8 *data, unsigned int size) { /* assure 4-byte align */ BUG_ON(size & 3); for (; size; size -= 4, reg_id += 4, data += 4) { u32 val = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]; vp_reg_write(res, reg_id, val); } } static void vp_default_filter(struct mixer_resources *res) { vp_filter_set(res, VP_POLY8_Y0_LL, filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8)); vp_filter_set(res, VP_POLY4_Y0_LL, filter_y_vert_tap4, sizeof(filter_y_vert_tap4)); vp_filter_set(res, VP_POLY4_C0_LL, filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4)); } static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable) { struct mixer_resources *res = &ctx->mixer_res; /* block update on vsync */ mixer_reg_writemask(res, MXR_STATUS, enable ? MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE); if (ctx->vp_enabled) vp_reg_write(res, VP_SHADOW_UPDATE, enable ? VP_SHADOW_UPDATE_ENABLE : 0); } static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height) { struct mixer_resources *res = &ctx->mixer_res; u32 val; /* choosing between interlace and progressive mode */ val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE); if (ctx->mxr_ver != MXR_VER_128_0_0_184) { /* choosing between proper HD and SD mode */ if (height <= 480) val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD; else if (height <= 576) val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD; else if (height <= 720) val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD; else if (height <= 1080) val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD; else val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD; } mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK); } static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height) { struct mixer_resources *res = &ctx->mixer_res; u32 val; if (height == 480) { val = MXR_CFG_RGB601_0_255; } else if (height == 576) { val = MXR_CFG_RGB601_0_255; } else if (height == 720) { val = MXR_CFG_RGB709_16_235; mixer_reg_write(res, MXR_CM_COEFF_Y, (1 << 30) | (94 << 20) | (314 << 10) | (32 << 0)); mixer_reg_write(res, MXR_CM_COEFF_CB, (972 << 20) | (851 << 10) | (225 << 0)); mixer_reg_write(res, MXR_CM_COEFF_CR, (225 << 20) | (820 << 10) | (1004 << 0)); } else if (height == 1080) { val = MXR_CFG_RGB709_16_235; mixer_reg_write(res, MXR_CM_COEFF_Y, (1 << 30) | (94 << 20) | (314 << 10) | (32 << 0)); mixer_reg_write(res, MXR_CM_COEFF_CB, (972 << 20) | (851 << 10) | (225 << 0)); mixer_reg_write(res, MXR_CM_COEFF_CR, (225 << 20) | (820 << 10) | (1004 << 0)); } else { val = MXR_CFG_RGB709_16_235; mixer_reg_write(res, MXR_CM_COEFF_Y, (1 << 30) | (94 << 20) | (314 << 10) | (32 << 0)); mixer_reg_write(res, MXR_CM_COEFF_CB, (972 << 20) | (851 << 10) | (225 << 0)); mixer_reg_write(res, MXR_CM_COEFF_CR, (225 << 20) | (820 << 10) | (1004 << 0)); } mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK); } static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win, bool enable) { struct mixer_resources *res = &ctx->mixer_res; u32 val = enable ? ~0 : 0; switch (win) { case 0: mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE); break; case 1: mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE); break; case 2: if (ctx->vp_enabled) { vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON); mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_VP_ENABLE); /* control blending of graphic layer 0 */ mixer_reg_writemask(res, MXR_GRAPHIC_CFG(0), val, MXR_GRP_CFG_BLEND_PRE_MUL | MXR_GRP_CFG_PIXEL_BLEND_EN); } break; } } static void mixer_run(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN); } static void mixer_stop(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; int timeout = 20; mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN); while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) && --timeout) usleep_range(10000, 12000); } static void vp_video_buffer(struct mixer_context *ctx, struct exynos_drm_plane *plane) { struct mixer_resources *res = &ctx->mixer_res; struct drm_plane_state *state = plane->base.state; struct drm_framebuffer *fb = state->fb; struct drm_display_mode *mode = &state->crtc->mode; unsigned long flags; dma_addr_t luma_addr[2], chroma_addr[2]; bool tiled_mode = false; bool crcb_mode = false; u32 val; switch (fb->pixel_format) { case DRM_FORMAT_NV12: crcb_mode = false; break; case DRM_FORMAT_NV21: crcb_mode = true; break; default: DRM_ERROR("pixel format for vp is wrong [%d].\n", fb->pixel_format); return; } luma_addr[0] = plane->dma_addr[0]; chroma_addr[0] = plane->dma_addr[1]; if (mode->flags & DRM_MODE_FLAG_INTERLACE) { ctx->interlace = true; if (tiled_mode) { luma_addr[1] = luma_addr[0] + 0x40; chroma_addr[1] = chroma_addr[0] + 0x40; } else { luma_addr[1] = luma_addr[0] + fb->pitches[0]; chroma_addr[1] = chroma_addr[0] + fb->pitches[0]; } } else { ctx->interlace = false; luma_addr[1] = 0; chroma_addr[1] = 0; } spin_lock_irqsave(&res->reg_slock, flags); mixer_vsync_set_update(ctx, false); /* interlace or progressive scan mode */ val = (ctx->interlace ? ~0 : 0); vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP); /* setup format */ val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12); val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR); vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK); /* setting size of input image */ vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) | VP_IMG_VSIZE(fb->height)); /* chroma height has to reduced by 2 to avoid chroma distorions */ vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) | VP_IMG_VSIZE(fb->height / 2)); vp_reg_write(res, VP_SRC_WIDTH, plane->src_w); vp_reg_write(res, VP_SRC_HEIGHT, plane->src_h); vp_reg_write(res, VP_SRC_H_POSITION, VP_SRC_H_POSITION_VAL(plane->src_x)); vp_reg_write(res, VP_SRC_V_POSITION, plane->src_y); vp_reg_write(res, VP_DST_WIDTH, plane->crtc_w); vp_reg_write(res, VP_DST_H_POSITION, plane->crtc_x); if (ctx->interlace) { vp_reg_write(res, VP_DST_HEIGHT, plane->crtc_h / 2); vp_reg_write(res, VP_DST_V_POSITION, plane->crtc_y / 2); } else { vp_reg_write(res, VP_DST_HEIGHT, plane->crtc_h); vp_reg_write(res, VP_DST_V_POSITION, plane->crtc_y); } vp_reg_write(res, VP_H_RATIO, plane->h_ratio); vp_reg_write(res, VP_V_RATIO, plane->v_ratio); vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE); /* set buffer address to vp */ vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]); vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]); vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]); vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]); mixer_cfg_scan(ctx, mode->vdisplay); mixer_cfg_rgb_fmt(ctx, mode->vdisplay); mixer_cfg_layer(ctx, plane->zpos, true); mixer_run(ctx); mixer_vsync_set_update(ctx, true); spin_unlock_irqrestore(&res->reg_slock, flags); mixer_regs_dump(ctx); vp_regs_dump(ctx); } static void mixer_layer_update(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE); } static int mixer_setup_scale(const struct exynos_drm_plane *plane, unsigned int *x_ratio, unsigned int *y_ratio) { if (plane->crtc_w != plane->src_w) { if (plane->crtc_w == 2 * plane->src_w) *x_ratio = 1; else goto fail; } if (plane->crtc_h != plane->src_h) { if (plane->crtc_h == 2 * plane->src_h) *y_ratio = 1; else goto fail; } return 0; fail: DRM_DEBUG_KMS("only 2x width/height scaling of plane supported\n"); return -ENOTSUPP; } static void mixer_graph_buffer(struct mixer_context *ctx, struct exynos_drm_plane *plane) { struct mixer_resources *res = &ctx->mixer_res; struct drm_plane_state *state = plane->base.state; struct drm_framebuffer *fb = state->fb; struct drm_display_mode *mode = &state->crtc->mode; unsigned long flags; unsigned int win = plane->zpos; unsigned int x_ratio = 0, y_ratio = 0; unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset; dma_addr_t dma_addr; unsigned int fmt; u32 val; switch (fb->pixel_format) { case DRM_FORMAT_XRGB4444: fmt = MXR_FORMAT_ARGB4444; break; case DRM_FORMAT_XRGB1555: fmt = MXR_FORMAT_ARGB1555; break; case DRM_FORMAT_RGB565: fmt = MXR_FORMAT_RGB565; break; case DRM_FORMAT_XRGB8888: case DRM_FORMAT_ARGB8888: fmt = MXR_FORMAT_ARGB8888; break; default: DRM_DEBUG_KMS("pixelformat unsupported by mixer\n"); return; } /* check if mixer supports requested scaling setup */ if (mixer_setup_scale(plane, &x_ratio, &y_ratio)) return; dst_x_offset = plane->crtc_x; dst_y_offset = plane->crtc_y; /* converting dma address base and source offset */ dma_addr = plane->dma_addr[0] + (plane->src_x * fb->bits_per_pixel >> 3) + (plane->src_y * fb->pitches[0]); src_x_offset = 0; src_y_offset = 0; if (mode->flags & DRM_MODE_FLAG_INTERLACE) ctx->interlace = true; else ctx->interlace = false; spin_lock_irqsave(&res->reg_slock, flags); mixer_vsync_set_update(ctx, false); /* setup format */ mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win), MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK); /* setup geometry */ mixer_reg_write(res, MXR_GRAPHIC_SPAN(win), fb->pitches[0] / (fb->bits_per_pixel >> 3)); /* setup display size */ if (ctx->mxr_ver == MXR_VER_128_0_0_184 && win == MIXER_DEFAULT_WIN) { val = MXR_MXR_RES_HEIGHT(mode->vdisplay); val |= MXR_MXR_RES_WIDTH(mode->hdisplay); mixer_reg_write(res, MXR_RESOLUTION, val); } val = MXR_GRP_WH_WIDTH(plane->src_w); val |= MXR_GRP_WH_HEIGHT(plane->src_h); val |= MXR_GRP_WH_H_SCALE(x_ratio); val |= MXR_GRP_WH_V_SCALE(y_ratio); mixer_reg_write(res, MXR_GRAPHIC_WH(win), val); /* setup offsets in source image */ val = MXR_GRP_SXY_SX(src_x_offset); val |= MXR_GRP_SXY_SY(src_y_offset); mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val); /* setup offsets in display image */ val = MXR_GRP_DXY_DX(dst_x_offset); val |= MXR_GRP_DXY_DY(dst_y_offset); mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val); /* set buffer address to mixer */ mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr); mixer_cfg_scan(ctx, mode->vdisplay); mixer_cfg_rgb_fmt(ctx, mode->vdisplay); mixer_cfg_layer(ctx, win, true); /* layer update mandatory for mixer 16.0.33.0 */ if (ctx->mxr_ver == MXR_VER_16_0_33_0 || ctx->mxr_ver == MXR_VER_128_0_0_184) mixer_layer_update(ctx); mixer_run(ctx); mixer_vsync_set_update(ctx, true); spin_unlock_irqrestore(&res->reg_slock, flags); mixer_regs_dump(ctx); } static void vp_win_reset(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; int tries = 100; vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING); for (tries = 100; tries; --tries) { /* waiting until VP_SRESET_PROCESSING is 0 */ if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING) break; usleep_range(10000, 12000); } WARN(tries == 0, "failed to reset Video Processor\n"); } static void mixer_win_reset(struct mixer_context *ctx) { struct mixer_resources *res = &ctx->mixer_res; unsigned long flags; u32 val; /* value stored to register */ spin_lock_irqsave(&res->reg_slock, flags); mixer_vsync_set_update(ctx, false); mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK); /* set output in RGB888 mode */ mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK); /* 16 beat burst in DMA */ mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST, MXR_STATUS_BURST_MASK); /* setting default layer priority: layer1 > layer0 > video * because typical usage scenario would be * layer1 - OSD * layer0 - framebuffer * video - video overlay */ val = MXR_LAYER_CFG_GRP1_VAL(3); val |= MXR_LAYER_CFG_GRP0_VAL(2); if (ctx->vp_enabled) val |= MXR_LAYER_CFG_VP_VAL(1); mixer_reg_write(res, MXR_LAYER_CFG, val); /* setting background color */ mixer_reg_write(res, MXR_BG_COLOR0, 0x008080); mixer_reg_write(res, MXR_BG_COLOR1, 0x008080); mixer_reg_write(res, MXR_BG_COLOR2, 0x008080); /* setting graphical layers */ val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */ val |= MXR_GRP_CFG_WIN_BLEND_EN; val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */ /* Don't blend layer 0 onto the mixer background */ mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val); /* Blend layer 1 into layer 0 */ val |= MXR_GRP_CFG_BLEND_PRE_MUL; val |= MXR_GRP_CFG_PIXEL_BLEND_EN; mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val); /* setting video layers */ val = MXR_GRP_CFG_ALPHA_VAL(0); mixer_reg_write(res, MXR_VIDEO_CFG, val); if (ctx->vp_enabled) { /* configuration of Video Processor Registers */ vp_win_reset(ctx); vp_default_filter(res); } /* disable all layers */ mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE); mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE); if (ctx->vp_enabled) mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE); mixer_vsync_set_update(ctx, true); spin_unlock_irqrestore(&res->reg_slock, flags); } static irqreturn_t mixer_irq_handler(int irq, void *arg) { struct mixer_context *ctx = arg; struct mixer_resources *res = &ctx->mixer_res; u32 val, base, shadow; spin_lock(&res->reg_slock); /* read interrupt status for handling and clearing flags for VSYNC */ val = mixer_reg_read(res, MXR_INT_STATUS); /* handling VSYNC */ if (val & MXR_INT_STATUS_VSYNC) { /* vsync interrupt use different bit for read and clear */ val |= MXR_INT_CLEAR_VSYNC; val &= ~MXR_INT_STATUS_VSYNC; /* interlace scan need to check shadow register */ if (ctx->interlace) { base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0)); shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0)); if (base != shadow) goto out; base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1)); shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1)); if (base != shadow) goto out; } drm_crtc_handle_vblank(&ctx->crtc->base); exynos_drm_crtc_finish_pageflip(ctx->crtc); /* set wait vsync event to zero and wake up queue. */ if (atomic_read(&ctx->wait_vsync_event)) { atomic_set(&ctx->wait_vsync_event, 0); wake_up(&ctx->wait_vsync_queue); } } out: /* clear interrupts */ mixer_reg_write(res, MXR_INT_STATUS, val); spin_unlock(&res->reg_slock); return IRQ_HANDLED; } static int mixer_resources_init(struct mixer_context *mixer_ctx) { struct device *dev = &mixer_ctx->pdev->dev; struct mixer_resources *mixer_res = &mixer_ctx->mixer_res; struct resource *res; int ret; spin_lock_init(&mixer_res->reg_slock); mixer_res->mixer = devm_clk_get(dev, "mixer"); if (IS_ERR(mixer_res->mixer)) { dev_err(dev, "failed to get clock 'mixer'\n"); return -ENODEV; } mixer_res->hdmi = devm_clk_get(dev, "hdmi"); if (IS_ERR(mixer_res->hdmi)) { dev_err(dev, "failed to get clock 'hdmi'\n"); return PTR_ERR(mixer_res->hdmi); } mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi"); if (IS_ERR(mixer_res->sclk_hdmi)) { dev_err(dev, "failed to get clock 'sclk_hdmi'\n"); return -ENODEV; } res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0); if (res == NULL) { dev_err(dev, "get memory resource failed.\n"); return -ENXIO; } mixer_res->mixer_regs = devm_ioremap(dev, res->start, resource_size(res)); if (mixer_res->mixer_regs == NULL) { dev_err(dev, "register mapping failed.\n"); return -ENXIO; } res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0); if (res == NULL) { dev_err(dev, "get interrupt resource failed.\n"); return -ENXIO; } ret = devm_request_irq(dev, res->start, mixer_irq_handler, 0, "drm_mixer", mixer_ctx); if (ret) { dev_err(dev, "request interrupt failed.\n"); return ret; } mixer_res->irq = res->start; return 0; } static int vp_resources_init(struct mixer_context *mixer_ctx) { struct device *dev = &mixer_ctx->pdev->dev; struct mixer_resources *mixer_res = &mixer_ctx->mixer_res; struct resource *res; mixer_res->vp = devm_clk_get(dev, "vp"); if (IS_ERR(mixer_res->vp)) { dev_err(dev, "failed to get clock 'vp'\n"); return -ENODEV; } if (mixer_ctx->has_sclk) { mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer"); if (IS_ERR(mixer_res->sclk_mixer)) { dev_err(dev, "failed to get clock 'sclk_mixer'\n"); return -ENODEV; } mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer"); if (IS_ERR(mixer_res->mout_mixer)) { dev_err(dev, "failed to get clock 'mout_mixer'\n"); return -ENODEV; } if (mixer_res->sclk_hdmi && mixer_res->mout_mixer) clk_set_parent(mixer_res->mout_mixer, mixer_res->sclk_hdmi); } res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1); if (res == NULL) { dev_err(dev, "get memory resource failed.\n"); return -ENXIO; } mixer_res->vp_regs = devm_ioremap(dev, res->start, resource_size(res)); if (mixer_res->vp_regs == NULL) { dev_err(dev, "register mapping failed.\n"); return -ENXIO; } return 0; } static int mixer_initialize(struct mixer_context *mixer_ctx, struct drm_device *drm_dev) { int ret; struct exynos_drm_private *priv; priv = drm_dev->dev_private; mixer_ctx->drm_dev = drm_dev; mixer_ctx->pipe = priv->pipe++; /* acquire resources: regs, irqs, clocks */ ret = mixer_resources_init(mixer_ctx); if (ret) { DRM_ERROR("mixer_resources_init failed ret=%d\n", ret); return ret; } if (mixer_ctx->vp_enabled) { /* acquire vp resources: regs, irqs, clocks */ ret = vp_resources_init(mixer_ctx); if (ret) { DRM_ERROR("vp_resources_init failed ret=%d\n", ret); return ret; } } ret = drm_iommu_attach_device(drm_dev, mixer_ctx->dev); if (ret) priv->pipe--; return ret; } static void mixer_ctx_remove(struct mixer_context *mixer_ctx) { drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev); } static int mixer_enable_vblank(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; struct mixer_resources *res = &mixer_ctx->mixer_res; __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return 0; /* enable vsync interrupt */ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC); return 0; } static void mixer_disable_vblank(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; struct mixer_resources *res = &mixer_ctx->mixer_res; __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; /* disable vsync interrupt */ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC); } static void mixer_update_plane(struct exynos_drm_crtc *crtc, struct exynos_drm_plane *plane) { struct mixer_context *mixer_ctx = crtc->ctx; DRM_DEBUG_KMS("win: %d\n", plane->zpos); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; if (plane->zpos > 1 && mixer_ctx->vp_enabled) vp_video_buffer(mixer_ctx, plane); else mixer_graph_buffer(mixer_ctx, plane); } static void mixer_disable_plane(struct exynos_drm_crtc *crtc, struct exynos_drm_plane *plane) { struct mixer_context *mixer_ctx = crtc->ctx; struct mixer_resources *res = &mixer_ctx->mixer_res; unsigned long flags; DRM_DEBUG_KMS("win: %d\n", plane->zpos); if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; spin_lock_irqsave(&res->reg_slock, flags); mixer_vsync_set_update(mixer_ctx, false); mixer_cfg_layer(mixer_ctx, plane->zpos, false); mixer_vsync_set_update(mixer_ctx, true); spin_unlock_irqrestore(&res->reg_slock, flags); } static void mixer_wait_for_vblank(struct exynos_drm_crtc *crtc) { struct mixer_context *mixer_ctx = crtc->ctx; int err; if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; err = drm_vblank_get(mixer_ctx->drm_dev, mixer_ctx->pipe); if (err < 0) { DRM_DEBUG_KMS("failed to acquire vblank counter\n"); return; } atomic_set(&mixer_ctx->wait_vsync_event, 1); /* * wait for MIXER to signal VSYNC interrupt or return after * timeout which is set to 50ms (refresh rate of 20). */ if (!wait_event_timeout(mixer_ctx->wait_vsync_queue, !atomic_read(&mixer_ctx->wait_vsync_event), HZ/20)) DRM_DEBUG_KMS("vblank wait timed out.\n"); drm_vblank_put(mixer_ctx->drm_dev, mixer_ctx->pipe); } static void mixer_enable(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; struct mixer_resources *res = &ctx->mixer_res; int ret; if (test_bit(MXR_BIT_POWERED, &ctx->flags)) return; pm_runtime_get_sync(ctx->dev); ret = clk_prepare_enable(res->mixer); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret); return; } ret = clk_prepare_enable(res->hdmi); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret); return; } if (ctx->vp_enabled) { ret = clk_prepare_enable(res->vp); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n", ret); return; } if (ctx->has_sclk) { ret = clk_prepare_enable(res->sclk_mixer); if (ret < 0) { DRM_ERROR("Failed to prepare_enable the " \ "sclk_mixer clk [%d]\n", ret); return; } } } set_bit(MXR_BIT_POWERED, &ctx->flags); mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET); if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) { mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC); } mixer_win_reset(ctx); } static void mixer_disable(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; struct mixer_resources *res = &ctx->mixer_res; int i; if (!test_bit(MXR_BIT_POWERED, &ctx->flags)) return; mixer_stop(ctx); mixer_regs_dump(ctx); for (i = 0; i < MIXER_WIN_NR; i++) mixer_disable_plane(crtc, &ctx->planes[i]); clear_bit(MXR_BIT_POWERED, &ctx->flags); clk_disable_unprepare(res->hdmi); clk_disable_unprepare(res->mixer); if (ctx->vp_enabled) { clk_disable_unprepare(res->vp); if (ctx->has_sclk) clk_disable_unprepare(res->sclk_mixer); } pm_runtime_put_sync(ctx->dev); } /* Only valid for Mixer version 16.0.33.0 */ int mixer_check_mode(struct drm_display_mode *mode) { u32 w, h; w = mode->hdisplay; h = mode->vdisplay; DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n", mode->hdisplay, mode->vdisplay, mode->vrefresh, (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0); if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) || (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) || (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080)) return 0; return -EINVAL; } static const struct exynos_drm_crtc_ops mixer_crtc_ops = { .enable = mixer_enable, .disable = mixer_disable, .enable_vblank = mixer_enable_vblank, .disable_vblank = mixer_disable_vblank, .wait_for_vblank = mixer_wait_for_vblank, .update_plane = mixer_update_plane, .disable_plane = mixer_disable_plane, }; static struct mixer_drv_data exynos5420_mxr_drv_data = { .version = MXR_VER_128_0_0_184, .is_vp_enabled = 0, }; static struct mixer_drv_data exynos5250_mxr_drv_data = { .version = MXR_VER_16_0_33_0, .is_vp_enabled = 0, }; static struct mixer_drv_data exynos4212_mxr_drv_data = { .version = MXR_VER_0_0_0_16, .is_vp_enabled = 1, }; static struct mixer_drv_data exynos4210_mxr_drv_data = { .version = MXR_VER_0_0_0_16, .is_vp_enabled = 1, .has_sclk = 1, }; static const struct platform_device_id mixer_driver_types[] = { { .name = "s5p-mixer", .driver_data = (unsigned long)&exynos4210_mxr_drv_data, }, { .name = "exynos5-mixer", .driver_data = (unsigned long)&exynos5250_mxr_drv_data, }, { /* end node */ } }; static struct of_device_id mixer_match_types[] = { { .compatible = "samsung,exynos4210-mixer", .data = &exynos4210_mxr_drv_data, }, { .compatible = "samsung,exynos4212-mixer", .data = &exynos4212_mxr_drv_data, }, { .compatible = "samsung,exynos5-mixer", .data = &exynos5250_mxr_drv_data, }, { .compatible = "samsung,exynos5250-mixer", .data = &exynos5250_mxr_drv_data, }, { .compatible = "samsung,exynos5420-mixer", .data = &exynos5420_mxr_drv_data, }, { /* end node */ } }; MODULE_DEVICE_TABLE(of, mixer_match_types); static int mixer_bind(struct device *dev, struct device *manager, void *data) { struct mixer_context *ctx = dev_get_drvdata(dev); struct drm_device *drm_dev = data; struct exynos_drm_plane *exynos_plane; enum drm_plane_type type; unsigned int zpos; int ret; ret = mixer_initialize(ctx, drm_dev); if (ret) return ret; for (zpos = 0; zpos < MIXER_WIN_NR; zpos++) { type = (zpos == MIXER_DEFAULT_WIN) ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; ret = exynos_plane_init(drm_dev, &ctx->planes[zpos], 1 << ctx->pipe, type, zpos); if (ret) return ret; } exynos_plane = &ctx->planes[MIXER_DEFAULT_WIN]; ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base, ctx->pipe, EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx); if (IS_ERR(ctx->crtc)) { mixer_ctx_remove(ctx); ret = PTR_ERR(ctx->crtc); goto free_ctx; } return 0; free_ctx: devm_kfree(dev, ctx); return ret; } static void mixer_unbind(struct device *dev, struct device *master, void *data) { struct mixer_context *ctx = dev_get_drvdata(dev); mixer_ctx_remove(ctx); } static const struct component_ops mixer_component_ops = { .bind = mixer_bind, .unbind = mixer_unbind, }; static int mixer_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct mixer_drv_data *drv; struct mixer_context *ctx; int ret; ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) { DRM_ERROR("failed to alloc mixer context.\n"); return -ENOMEM; } if (dev->of_node) { const struct of_device_id *match; match = of_match_node(mixer_match_types, dev->of_node); drv = (struct mixer_drv_data *)match->data; } else { drv = (struct mixer_drv_data *) platform_get_device_id(pdev)->driver_data; } ctx->pdev = pdev; ctx->dev = dev; ctx->vp_enabled = drv->is_vp_enabled; ctx->has_sclk = drv->has_sclk; ctx->mxr_ver = drv->version; init_waitqueue_head(&ctx->wait_vsync_queue); atomic_set(&ctx->wait_vsync_event, 0); platform_set_drvdata(pdev, ctx); ret = component_add(&pdev->dev, &mixer_component_ops); if (!ret) pm_runtime_enable(dev); return ret; } static int mixer_remove(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); component_del(&pdev->dev, &mixer_component_ops); return 0; } struct platform_driver mixer_driver = { .driver = { .name = "exynos-mixer", .owner = THIS_MODULE, .of_match_table = mixer_match_types, }, .probe = mixer_probe, .remove = mixer_remove, .id_table = mixer_driver_types, };